The Vaico Expansion Tank Retainer (part number V201383) is a component used in automotive cooling systems. It is designed to securely hold the expansion tank in place, preventing it from shifting or becoming dislodged during vehicle operation. This retainer is made of durable materials to withstand the high temperatures and pressures found in the cooling system. It is a direct replacement for the original retainer and is compatible with a variety of vehicle makes and models. Properly securing the expansion tank with this retainer helps to ensure the efficient operation of the cooling system, preventing any potential leaks or malfunctions.